After doing Activity of electroplating a spoon with copper, a student interchanged the connections of the copper
plate and the spoon. What do you think will happen now?
If after electroplating a spoon with copper, the connections of the copper plate and the spoon are interchanged, the copper deposited on the spoon will start disappearing and going into solution.
(a) When dilute sulphuric acid is poured on a copper plate, there will be evolution of hydrogen gas along with the formation of blue color crystals of copper sulphate.
CuSO4 +...
Copper ion is positively charged. It is attracted towards the plate which is connected to the negative terminal of the battery. As copper ions are transferred to the thin copper...
(a) We can connect the galvanometer to any one of the sources using a key in the circuit. If the galvanometer shows definite deflection in a given direction, the source...
If the iron railing on the road side is not painted, a brown rust would form on its surface because the moist air of the atmosphere reacts with iron to...
The correct answer is (a) (c) (d)
(a) the facing surfaces of the capacitor have equal and opposite charges.
(c) the battery supplies equal and opposite charges to the two plates.
(d) the...
The correct answer is all
Explanation:
If u and v are the velocities before collision and u' and v' are the velocities after collision, then we have
u' = (m-m)u/(m+m) +2mv/(m+m) = 0...
