Current Electricity The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is Negative Zero About 2 ohms per degree Positive Negative Zero About 2 ohms per degree Positive ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Electrical current is due to the flow of Positive charges only Negative charges only Both positive and negative charges Neutral particles only Positive charges only Negative charges only Both positive and negative charges Neutral particles only ANSWER DOWNLOAD EXAMIANS APP
Current Electricity With rise in temperature the resistance of pure metals Decreases Increases First increases and then decreases Remains constant Decreases Increases First increases and then decreases Remains constant ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Two resistances Rl and Ri are connected in series across the voltage source where Rl > Ri. The largest drop will be across None of them Rl Ri Either Rl or Ri None of them Rl Ri Either Rl or Ri ANSWER DOWNLOAD EXAMIANS APP
Current Electricity All of the following are equivalent to watt except Joules/sec. Amperes × volts Amperes/volt (Amperes) ohm Joules/sec. Amperes × volts Amperes/volt (Amperes) ohm ANSWER DOWNLOAD EXAMIANS APP
Current Electricity Which of the following is the best material for making connecting wires? Manganin Constant Copper Nichrome Manganin Constant Copper Nichrome ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS