Related InterviewSolutions

• Ohm’s law is valid only when(a) Temperature increases(b) Temperature decreases(c) Current remains constant(d) Temperature remains constant.
• If a wire of resistance R is melted and recast into half of its length, the new resistance of wire will be (a) R/4 (b) R/2 (c) R (d) 2R
• The resistance of germanium with rise in temperature (a) increase (b) decreases (c) remains same (d) first increases then decreases
• If R1 and R2 are the resistance of filaments of a 400 W and 200 W lamp designed to operate at same voltage then:(a) R1 = 2R2(b) R2 = 2R1(c)R2 = 4R1(d) R1 = R2
• How is power related to current and voltage?
• The unit of specific resistance is (a) Ohm (b) Ohm per second (c) Ohm meter (d) Ohm per meter
• What constitutes the current?
• What is an electromagnet?
• Define electromagnetic induction.
• How is 1 ohm related to ampere and volt?