A direct current of 5A flow through a 0.2H inductor. Calc...
A direct current of 5A flow through a 0.2H inductor. Calculate the energy stored in the inductor
0.5J
1.0J
2.5J
5.0J
Correct answer is C
P = 12I2L
= 52× 0.2 × 12
= 2.5J
The walls and ceilings of many standard auditoria are covered with perforated pads to ...
A bird flies at 10ms−1 for 3s, 15ms−1 for 3s and 20 ms−1 for 4s. Calculate the ...
According to Ohm's law, the ratio V/I is constant for ...
The diagram above illustrates an a.c.source of 50V(r.m.s.), 100πHz connected in serie...
A short response time is obtained in a liquid-in-glass thermometer when the ...
The half-life of a radioactive substance is 2 seconds. Calculate the decay constant ...