Question:

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

Updated On: Aug 31, 2023
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The Correct Option is C

Solution and Explanation

The correct option is (c).
We will require a voltmeter, an ammeter, a test resistor and a variable battery to verify Ohm's law. 
Voltmeter which is made by connecting a high resistance with a galvanometer is connected in parallel with the test resistor. 
Further, an ammeter which is formed by connecting a lowresistance in parallel with galvanometer is required tomeasure the current through test resistor. 
 
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Concepts Used:

Current Electricity

Current electricity is defined as the flow of electrons from one section of the circuit to another.

Types of Current Electricity

There are two types of current electricity as follows:

Direct Current

The current electricity whose direction remains the same is known as direct current. Direct current is defined by the constant flow of electrons from a region of high electron density to a region of low electron density. DC is used in many household appliances and applications that involve a battery.

Alternating Current

The current electricity that is bidirectional and keeps changing the direction of the charge flow is known as alternating current. The bi-directionality is caused by a sinusoidally varying current and voltage that reverses directions, creating a periodic back-and-forth motion for the current. The electrical outlets at our homes and industries are supplied with alternating current.