For metals, the temperature coefficient of resistance is:
Correct answer: C. Positive
- A. Infinity
- B. Negative
- C. Positive
- D. Zero
Explanation
The coefficient of temperature for resistance in metals is positive.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
Practise Current Electricity
1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Current Electricity questions
Temperature coefficient of resistance is defined as increase in resistance per ohm original resistance per
The I-V Graph for a non-Ohmic material is always
What does one Coulomb represent in terms of charge?
If R1 and R2 are respectively the filament resistance of a 100-Watt bulb and 200-Watt bulb designed to operate on the same voltage, then resistance of:
The maximum power transfer theorem states that maximum power is delivered to the load when
Let five resistors, each of 10 ohm, are connected in parallel and the combination is then connected with a battery of 50V. The current through each resistor will be: