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JEE Main20206 Sep 2020Evening ShiftPhysicsCurrent ElectricityActual

A circuit to verify Ohm's law uses ammeter and voltmeter in series or parallel connected corrected correctly to the resistor. In the circuit :

Options

  1. Aammeter is always used in parallel and voltmeter is series
  2. BBoth ammeter and voltmeter must be connected in parallel
  3. Cammeter is always connected in series and voltmeter in parallel
  4. DBoth ammeter and voltmeter must be connected in series

Correct answer

C. ammeter is always connected in series and voltmeter in parallel

Step-by-step solution

Since the potential difference is measured across the two ends of the component, the voltmeter must always be connected in parallel to the components. An ammeter is an instrument which is used to measure the amount of current flowing in the circuit or through any component. It also consists of two terminals. The current is measured at a point. Therefore, the ammeter must be connected in series with the circuit components.Ohm’s law states that voltage (potential difference) across a resistance in a circuit is

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