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Get Answers to all your Questions
(a) State Ohm’s Law.
(b) How is an ammeter connected in an electric circuit ?
(c) The power of a lamp is 100 W. Find the energy consumed by it in 1 minute.
(d) A wire of resistance is bent in the form of a closed circle. Find the resistance between two points at the ends of any diameter of the circle.
Answers (2)
(a) The potential difference ,V , across the ends of a given metallic wire in an electric circuit is directly proportional to the current flowing through it, provided its temperature remains the same
(b) An ammeter is connected in an electric circuit In Series
(c) Energy consumed in 1 minute = p*t
= 1000 W * 60 s
= 6000 J
(d) The resistance between two points at the ends of any diameter of the circle-
1/RP = 1/R1 +1/R2
R1 = 2.5 ohm
R2 = 2.5 ohm
Hence, R= 2.5/2 = 1.25 ohm
(a) The potential difference ,V , across the ends of a given metallic wire in an electric circuit is directly proportional to the current flowing through it, provided its temperature remains the same
(b) An ammeter is connected in an electric circuit In Series
(c) Energy consumed in 1 minute = p*t
= 1000 W * 60 s
= 6000 J
(d) The resistance between two points at the ends of any diameter of the circle-
1/RP = 1/R1 +1/R2
R1 = 2.5 ohm
R2 = 2.5 ohm
Hence, R= 2.5/2 = 1.25 ohm
