(10 points) A spring with a 7-kg mass and a damping constant 12 can be held stretched 1 meters beyond its natural length by a fo
1 answer:
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Answer:
(a)
(b) neither increasing or decreasing
(c) opposite to the flow of charge carriers
Explanation:
The current through an inductor of inductance L is given by:
(1)
(a) The induced emf is given by the following formula
(2)
You derivative the expression (1) in the expression (2):
(b) At t=0 the current is zero
(c) At t = 0 the emf is:
w, L and Imax have positive values, then the emf is negative. Hence, the induced emf is opposite to the flow of the charge carriers.
(d) read the text carefully
Answer:
The output power is 2 kW
Explanation:
It is given that,
Number of turns in primary coil,
Number of turns in secondary coil,
Voltage of primary coil,
Current drawn from secondary coil,
We need to find the power output. It is equal to the product of voltage and current. Firstly, we will find the voltage of secondary coil as :
So, the power output is :
or
So, the output power is 2 kW. Hence, this is the required solution.