The emf induced = B*l*v where B is the flux density, l the length of the conductor and v the velocity of the conductor. In the given case B = 0.035 N/amp.meter, l = 0.86 and v = 6 m/sec
emf = 0.035*0.86*6 = 0.1806 v ≈ 0.18 v
choice: D
<h2>
Answer:</h2>
If you triple the charge, the electric potential is 3V.
<h2>
Explanation:</h2>
If you triple the charge, the electric potential is 3V. Put another way, the value of the electric potential at the same location is tripled if the strength of the charge is tripled.
<em>But why this is true?</em>
Well, the potential V due to a single point charge q is:

If the strength of the charge is tripled means that our new q1=3q, therefore:


So you can see that in fact if you triple the charge, the electric potential is 3V.
Answer:
#1
Explanation:
On a train you are sitting so not in motion but to someone outside the train you are in motion with the train
Answer:
9 seconds
Explanation:


cross multiplying

it will take 9secs for the car to go from 0 to 45 km/ h