Question

In the following diagram, the position of the needle is shown on the scale of a voltmeter. The least count of the voltmeter and the reading shown by it respectively are:

(a) Draw a schematic diagram of a circuit consisting of a battery of four 1.5V cells, a 5 ohm register, 10 ohm and 15 ohm resistors in a series connection with ammeter and volt meter across 10 ohm resistors. (b) Find the electric current passing through the circuit. (c) What is the potential difference across 10 ohm resistors?

The diagram below shows how Amita had connected a circuit to verify Ohm's law.

Three resistors of 2 Ω, 3 Ω and 4 Ω are connected in series and the combination is connected to a battery of 9 V. An ammeter and a voltmeter are also connected in the circuit. Draw a circuit diagram to show the connection of the above said devices in a correct order. Determine (i) current shown by the ammeter and (ii) potential difference across the 3 Ω resistor.