Answer:
This is because of friction and heat lost.
Explanation:
Answer:
Option B
Solution:
As per the question:
Length of the suspended wire, l = 16 cm = 0.16 m
Distance between the long wire and the suspended wire, R = 1.5 mm = 0.0015 m
Mass of the 16 cm wire, m = 0.014 kg
Now,
We know that the magnetic field due to the two parallel current carrying straight long wires with current 'I' and the separation 'R' between the wires is given by:
(1)
If the suspended wire floats, force due to its weight is balanced by the magnetic force due to current I:
mg = IBl
Also, from eqn (1):
mg =
mg =
I = 80.19 A
I = 80 A (approx)
A circuit breaker may need to switch short circuit currents as high as <u>fifteen (15)</u> times its rated current.
<u>Rated current</u> is basically the<u> maximum limiting current</u>. If the current exceeds its maximum limit, there will be overheating and, in severe circumstances, a <u>short circuit</u> will result.
A<u> circuit breaker</u> is a type of <u>electrical safety</u> device used to guard against short circuit damage to an electrical circuit.
An example of circuit breakers that are most frequently used in low voltage circuits is <u>Miniature Circuit Breakers</u> (MCBs).
These are the switches that automatically turn off when the current in a circuit exceeds the<u> safe limit</u>.
So, to ensure complete protection against <u>short circuits</u> & <u>overloading</u>, a circuit breaker may need to switch short circuit current as high as fifteen times its rated current.
Learn more about short circuit here brainly.com/question/25018411
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Answer:
B
Explanation:this is not physics