Question

An electronic device has a resistance of 20 ohms

Answer 1

Answer:

300

Explanation:

V=IRHere,R=20 ohmls=15av=20×15=300v

Answer 2

Explanation:

energy,h=500000j

resistance,r=20 ohm

time,t=1min=60 second them

h=1'π rt

or•1π rt

or•1π 5×100000/1200

or•1~√146

=20•39A