A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. Dissipated power when an ideal power supply if 11V is connected across it is:
(a)
11×10−5 W
(b)
11×10−4 W
(c)
11×105 W
(d)
11×10−3 W
A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. Dissipated power when an ideal power supply if 11V is connected across it is:
(a)
11×10−5 W
(b)
11×10−4 W
(c)
11×105 W
(d)
11×10−3 W
Question ID - 50254 | SaraNextGen Top Answer
A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. Dissipated power when an ideal power supply if 11V is connected across it is:
(a)
11×10−5 W
(b)
11×10−4 W
(c)
11×105 W
(d)
11×10−3 W
|
A current of 2 mA was passed through an unknown resistor which dissipated a power of 4.4 W. Dissipated power when an ideal power supply if 11V is connected across it is: |
|||
|
(a) |
11×10−5 W |
(b) |
11×10−4 W |
|
(c) |
11×105 W |
(d) |
11×10−3 W |
1 Answer
127 votes
Answer Key / Explanation : (a) -
P=I2R
4.4=4×10−6R
R=1.1×106
P1 = 
=
×10−6=11×10−5W
127 votes
Answer Link
127