Question

draw circuit diagram consisting of three cells of 2v each,and4ohm,8ohm,and 12ohm resistor and a plug key all connected in series.also include an ammetor to measure current through 12ohm resistor and a voltmeter toeasire potential difference across 12ohm resistor.what would be the reading​

Answer 1

Answer:

Given:-

Potential difference = 6 V

Net resistance = 25 ohm

Finding the Current (Ammeter reading) –

V = I * R

6 V = I * 25

I = 6/25

Ammeter reading = current = 0.24 A

Finding the voltmeter reading or the potential difference across 12 ohm resistor –

V = I * R

V = 0.24 * 12

Potential differennce = Voltage = 2.88 V

________________

An Ammeter is always connected in series.

A Voltmeter is always connected in parallel to the resistor.

An Ammeter is used to find out the current.

A Voltmeter is used to find out the potential difference across the resistor.