A 12V battery has an internal resistance of 0.5W.If a cab...
A 12V battery has an internal resistance of 0.5W.If a cable of 1.0W resistance is connected across the two terminals of the battery, the current drawn from the battery is
16.0A
8.0A
0.8A
0.4A
Correct answer is B
I = E.m.fR+r
= 121+0.5
I = 8A
Two cells each of e.m.f. 1.5V and an internal resistance 2Ω are connected in parallel. Calc...
from the diagram above, the inductive reactance and the resistance R are respectively ...
If the frequency of the e.m.f. source in the a.c. circuit illustrated above is 500πHz...
Electricity is supplied to a school along a cable of total resistance 0.5Ω with the maximum curre...
A body of mass 2kg is released from rest on a plane inclined at an angle of 60° to the hori...
When two cells of negligible internal resistances and equal e.m.f. denoted by E1 and E\(_2...
Temperature is the property of a body which is proportional to the ____. ...