Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test General Science Physics Current Electricity
In Alternating Current (AC), the direction and magnitude of the current varies
1
Randomly
2
Periodically
3
Exponentially
4
More than one of the above
5
None of the above