On the first, potential difference has nothing to do with it.
Resistance=voltage ^2/powerrating
On the second, no
Power= 10^2/40. That is not 400
1)Bulb P is rated 60 W, 110 V and bulb Q is rated 100 W, 110 V. Which of the bulbs has the higher resistance?
A)they have the same
B)cannot be determined
C)bulb P
D)bulb Q
I got C. b/c of higher potential difference.
2)A battery of 10.0 V is connected across a resistor of 40.0. Calculate the power delivered to the resistor.
A)400 W
B)10 W
C)2.5 W
D)25 W
10^2/40.0
I got A
2 answers
I meant C on 2.
1 answer