<span>Two plastic balls suspended by strings are placed close to each other. If they have the same charge then they will repel each other.</span>
Explanation:
The general equation of an AC current is given by :

Where
I₀ is the peak value of current
is angular frequency

So,

We know that,

So, the frequency is 50 Hz and the maximum rms value of current is 14.14 A.
Answer:
Solenoid is the correct answer
Answer:
put your question in proper way' i hope you understand.
Explanation:
Answer:
So after stretching new resistance will be 0.1823 ohm
Explanation:
We have given initially length of the wire 
Radius of the wire 
Resistance of the wire initially 
We know that resistance is equal to
,here
is resistivity, l is length and A is area
From the relation we can say that 
Now length of wire become 6.75 m
Volume will be constant
So 
So 

So 
