The intensity of the emergent light is, An ideal gas enclosed in a vertical cylindrical container supports a freely moving piston of mass $M$. It is measured by the device called ammeter. (a) volt Define 1 volt. Question 1: Calculate resistance of a given resistor by formula. (d) 1 A in circuit I and 1 A in circuit II. (c) 0.050 V If your circuit is not properly connected, it is possible to damage the electronic equipment used in this lab. (a) 0 V in both the circuits For effective use should be used intermittently. (b) 0.025 V What is the formula used to calculate the resistivity of a given wire? The graph of V and I is a straight line. Question 25: (c) Current will not flow through voltmeter as the key is open. (a) 0 A in circuit I and 1 A in circuit II The instrument used to measure the potential difference is Answer. In the circuit given below the voltmeter and ammeter readings are respectively (a) The voltmeter should have very high resistance so that it doesn’t allow current to flow through it and thus change the currents in the rest of the circuit. Question 38: (d) The resistors R1 and R2 have been correctly connected in parallel. To calculate resistivity. Аnswer: (c) 7.5 V The resistance of the lead wires is $6 \, \Omega$. Assuming that the system is completely isolated from its surrounding, the piston executes a simple harmonic motion with frequency, The graph between angle of deviation $(\delta)$ and angle of incidence (i) for a triangular prism is represented by, Two charges, each equal to $q$, are kept at $x = - a$ and $x = a$ on the $x-axis$. Аnswer: Question 2: Question 3: Color coding technique is used to represent the values of resistors in the form of colored bands. The fringes obtained on the screen will be, A beam of unpolarized light of intensity $I_0$ is passed through a polaroid $A$ and then through another polaroid $B$ which is oriented so that its principal plane makes an angle of 45$^{\circ}$ relative to that of $A$. ∴ R1 should be parallel to voltmeter & R2 should be series with ammeter. The phase difference between displacement and acceleration of a particle in a simple harmonic motion is: A cylinder contains hydrogen gas at pressure of 4. Connections should be made as per the circuit. The supply voltage in a room is $120\, V$. What will you infer if the deflection takes place in opposite direction? (b) 0 A in both the cases The piston is slightly displaced from the equilibrium position and released. The resistance of the conductor would be: Question 23: The value of R is found to be same and constant in all three readings. Such cells are also called accumulators or storage cells. The resistance of a wire depends on: (d) As per Ohm’s law of formula calculation. (a) volt (c) moderate resistance (a) I is directly proportional to V. Hence, straight line graph. They kept the contact J in four different positions, marked (a), (b), (c) and (d) in the two figures. (a) no reading in either the ammeter or the voltmeter. (b) Secondary cells can be recharged using a charger. Аnswer: (c) becomes halved Ohm’s Law and Kirchhoff’s Laws place constraints on voltages and current within a circuit, thus providing important information about these variables. (d) Through series, the current flows the same. Use Ohms law to relate resistance, current and voltage. Voltmeter should always be connected in parallel to resistor. Now before we do that, let's quickly recall what Ohm's law is. Two coherent point sources $S_1$ and $S_2$ are separated by a small distance $d$ as shown. (d) none of these. In an electric circuit the key should be kept off to avoid: Materials Required What is the decrease of voltage across the bulb, when a $240\, W$ heater is switched on in parallel to the bulb? (b) zero error Question 11: Set up your circuit with the power supply OFF and the output voltage turned DOWN TO ZERO. (d) 0.01. Semiconductor Electronics: Materials Devices and Simple Circuits, The shown p- V diagram represents the thermodynamic cycle of an engine, operating with an ideal monoatomic gas. Question 29: (d) joule, Question 4: Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points. The tension in it produces an elastic strain of $1 \%. 2) Ammeter is always connected in series in the circuit while voltmeter is parallel to the conductor. Suppose in this experiment you see that the deflection on ammeter (or voltmeter) scale goes beyond the full scale. Аnswer: Аnswer: In an experiment to study dependence of current on the potential difference across a given resistor, four students P, Q, R and S kept the plug key in the circuit closed for time t{ and then open for time t2 as given in the table below: The best choice of open and closed time is that of student Positive terminal of the battery is connected to the positive terminal of the ammeter. We need to identify the positive and negative terminal of the device by connecting it to the battery. 3) The electrical current should not flow the circuit for long time, Otherwise its temperature will increase and the result will be affected. Question 4: Question 19: (d) becomes four times, Question 13: CBSE Maths notes, CBSE physics notes, CBSE chemistry notes, Experiment To Verify Ohm’s Law Class 10 CBSE, Ohm’s Law Experiment Class 10 Pdf Introduction. Ohm's law states that under constant temperature, the current passing through conductor is directly proportional to potential difference applied across it. The best graph plotted by a student for Ohm’s experiment is: Question 39: (d) Least count is range divided by number of divisions. Ohm’s Law is named after George Simon Ohm a German physicist. To study the dependence of potential difference (V) across a resistor on the current (I) passing through it and determine its resistance. On x axis take V and on y axis take I. Also plot a graph between V and I. While 4 band resistors are most commonly available we’ll use them in next problems. (a) same reading in both the ammeter and the voltmeter Аnswer: This will allow you to verify Ohm’s law through simulation, verify Kirchoff’s laws, or calculate the transient behavior of the voltage and current in a circuit. (b) 0.075 V What is the value of charge in 1 electron? (b) 0.01 A A body weighs 72 N on the surface of the earth. The work done in moving a unit charge from one point to the other is called potential difference. 5. To make electric heater what type of wire should be used? The correct arrangement is: Question 41: B is completely evacuated. The graph of V-I is a straight line. Question 28: A. (b) Resistor and voltmeter are the two components connected in parallel. It produces 1.5 volts of p.d. The nature of resistor (a conductor having some resistance.). The piston and the cylinder have equal cross-sectional area$A$. Heating may change the resistance of resisters. The least count of the ammeter is Identify the circuit in which the electrical components have been properly connected. Before closing the circuit show the connections to the teacher to take the readings. (b) 2 V in both the circuits The instrument used to measure electric current is Аnswer: Аnswer: volt. NCERT Solutions for Class 6 Social Science History Chapter 1 What, Where, How and When? What is Ohm’s law? 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