You walk from the back to the
front of a train at a speed of
1.00 km/h. The train is travelling at a speed of 100.0 km/h. Your speed relative to the train track is-
F 1.00 km/h
G 99.0 km/h
H 100.0 km/h
J 101 km/h

I believe it is 1.00 km/h ! :))

Explanation:

DC Current

Explanation:

Battery is a source of constant potential difference and it will create a constant voltage across any conductor

due to this constant voltage difference the current in this conductor will remain constant

So here since the voltage across the conductor is constant so we can say that current in the conductor will remain constant and hence this is known as DC current.

While for variable current in direction and magnitude is to be obtained only when the conductor is connected with AC voltage source as we know that AC voltage is variable with magnitude and direction both

A battery is the power source for DC type of current.  A battery is a source of constant potential difference that produces a constant current unlike in AC source where the voltage and hence the current changes its polarity continuously.Hence, the current produced by battery is direct current and not Alternating current.

Hope this helps Stay safe and have a Merry Christmas :D