Which of the following is not a valid reason for using alloys to make standard resistors? a) Alloys have a high value of resistivity b) They are least affected by air and moisture c) Alloys have a large temperature coefficient d) Their contact potential with copper is small

Q: Question 4 (i) Calculate the current through a lamp of 25 W operating at 250 V. (ii) Why elements of…

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Q: Name a material which is used for making the standard resistor. Give reason for your answer.

A: Maganin alloy wire is used as standard resistor.

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Q: QUESTION 6 Which of these are NOT extrinsic properties of materials? mass resistivity specific heat…

A: Answer:-  Not extrinsic property of material :-  (1) Resistivity :- Resistivity is not extrinsic…

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Q: Identify the material which is suitable for making standard resistors. a) Silver b) Copper c)…

A: C

Q: Question 38 of 50 Which of these is a device that DOES NOT show Ohm's law? Select the correct…

A: For the ohm's  law V = IR  The device Follow  this rule is called ohmic device. Here , Only last…

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Q: Consider the circut below R2 = 20 k2 R = 10 kſ2 R3 - 10 k2 E V1 – 12 V V- 24 V R- 10 k2 Rs = 10 kl2…

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Q: QUESTION What happens to the drift speed of the electrons as the temperature rises? (Select all that…

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Q: Problem 3: The resistors in the circuit shown each have a resistance of 600 Q. What is the…

A: Equivalent resistance= 600 ohm.

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A: Answer:- (D) Resistance is directly proportional to a length of the wire is true. We know that  R =…

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A: Given data:  Resistance (R) = 9 Ω Current (I) = 4 A Required: Voltage (V)

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Q: What is the equivalent resistance of the group of resistors shown above? 42 N 40 N 30 N 45 N

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A: D

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