Question

A voltmeter has a resistance 100 ohm and measure 10 volt .How can it be used to measure 50 volt

Answer 1

Answer:

If 100 ohm mesures 10 volts then =

200 ohm= 20 volts

300 ohm= 30 volts

400 ohm= 40 volts

500 ohm= 50 volts

Answer 2

Answer:

R = 100

v= 10

I = ??

I= V/R

10 / 100

= 1 /5

I = 1 / 5

V= I / R

R= v / i

R= 50 by 1/10

R = 50× 10 /1

R = 500 ohm

V= 50 volt

i= ??

I = v/ R

= 50/ 500

i = 1/ 10

proved