to verify ohms law a student is provided with a test

To verify Ohm’s law, a student is provided with a test resistor $${R_T},$$ a high resistance $${R_1},$$ a small resistance $${R_2},$$ two identical galvanometers $${G_1}$$ and $${G_2,}$$ and a variable voltage source $$V.$$ The correct circuit to carry out the experiment is

Answer : Electric Current mcq option image

Solution :
The following points should be considered while making the circuit :
(i) An ammeter is made by connecting a low resistance $${R_2}$$ in parallel with the galvanometer $${G_2}.$$
Electric Current mcq solution image

(ii) A voltmeter is made by connecting a high resistance $${R_1}$$ in series with the galvanometer $${G_1}.$$
Electric Current mcq solution image

(iii) Voltmeter is connected in parallel with the test resistor $${R_T}.$$
(iv) Ammeter is connected in series with the test resistor $${R_T}.$$
(v) A variable voltage source $$V$$ is connected in series with the test resistor $${R_T}.$$

Releted MCQ Question on
Electrostatics and Magnetism >> Electric Current

Releted Question 1

The temperature coefficient of resistance of a wire is 0.00125 per $$^ \circ C$$ At $$300\,K,$$ its resistance is $$1\,ohm.$$ This resistance of the wire will be $$2\,ohm$$ at.

A. $$1154\,K$$

B. $$1100\,K$$

C. $$1400\,K$$

D. $$1127\,K$$

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Releted Question 2

A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if

A. both the length and the radius of the wire are halved.

B. both the length and the radius of the wire are doubled.

C. the radius of the wire is doubled.

D. the length of the wire is doubled.

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Releted Question 3

The electrostatic field due to a point charge depends on the distance $$r$$ as $$\frac{1}{{{r^2}}}.$$ Indicate which of the following quantities shows same dependence on $$r.$$

A. Intensity of light from a point source.

B. Electrostatic potential due to a point charge.

C. Electrostatic potential at a distance r from the centre of a charged metallic sphere. Given $$r$$ < radius of the sphere.

D. None of these

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Releted Question 4

The current $$i$$ in the circuit (see Fig) is

A. $$\frac{1}{{45}}A$$

B. $$\frac{1}{{15}}A$$

C. $$\frac{1}{{10}}A$$

D. $$\frac{1}{5}A$$

View Answer

To verify Ohm’s law, a student is provided with a test resistor $${R_T},$$ a high resistance $${R_1},$$ a small resistance $${R_2},$$ two identical galvanometers $${G_1}$$ and $${G_2,}$$ and a variable voltage source $$V.$$ The correct circuit to carry out the experiment is

Releted MCQ Question on
Electrostatics and Magnetism >> Electric Current

The temperature coefficient of resistance of a wire is 0.00125 per $$^ \circ C$$ At $$300\,K,$$ its resistance is $$1\,ohm.$$ This resistance of the wire will be $$2\,ohm$$ at.

A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if

The electrostatic field due to a point charge depends on the distance $$r$$ as $$\frac{1}{{{r^2}}}.$$ Indicate which of the following quantities shows same dependence on $$r.$$

The current $$i$$ in the circuit (see Fig) is

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Electric Current

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To verify Ohm’s law, a student is provided with a test resistor $${R_T},$$ a high resistance $${R_1},$$ a small resistance $${R_2},$$ two identical galvanometers $${G_1}$$ and $${G_2,}$$ and a variable voltage source $$V.$$ The correct circuit to carry out the experiment is

Releted MCQ Question on Electrostatics and Magnetism >> Electric Current

The temperature coefficient of resistance of a wire is 0.00125 per $$^ \circ C$$ At $$300\,K,$$ its resistance is $$1\,ohm.$$ This resistance of the wire will be $$2\,ohm$$ at.

A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if

The electrostatic field due to a point charge depends on the distance $$r$$ as $$\frac{1}{{{r^2}}}.$$ Indicate which of the following quantities shows same dependence on $$r.$$

The current $$i$$ in the circuit (see Fig) is

Practice More Releted MCQ Question on Electric Current

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Releted MCQ Question on
Electrostatics and Magnetism >> Electric Current

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Electric Current