Current Electricity 4 Question 17
17. 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
(2010) (a)
(c)
(b)
(d)
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Solution:
- 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 low resistance in parallel with galvanometer is required to measure the current through test resistor.
The correct option is (c).
