Question

Register of 500 ohm and $3,000 place in series with 60 volt supply what will the reading on the voltmeter of internal resistance 200 mm supply when placed across 500 ohm resistor and 3000 ohm resistor

Answer 1

Answer:

Resistors of 500 ohm and 3000 ohm are placed in series with a 60 V supply. What will be the reading on a voltmeter of internal resistance 2000 ohm

(a) when placed across the 500 ohm resistor

1/(1/500 + 1/2000)

= 2000/(4 + 1)

= 400 Ω

400 + 3000 = 3400 Ω

I = 60/3400

Voltage reading = (60/3400 ) * 400 = 120/17 V

(b) when placed across the the 3000 ohm resistor?

1/(1/2000 + 1/3000)

= 6000/(3 + 2)

= 1200 Ω

500 + 1200 = 1700 Ω

I = 60/1700

Voltage reading = (60/1700) * 1200 = 720/17 V.....

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