CBSE Class 10 Science 2020 · Paper 31/3/1 · Question 6
A cylindrical conductor of length ‘’ and uniform area of cross section ‘’ has resistance ‘’. The area of cross section of another conductor of same material and same resistance but of length ‘’ is
- (a)
- (b)
- (c)
- (d)
Answer
(c)
🔒 Step-by-step solution
Sign up free to see every step of how it is worked out.
From the board papers
More questions from Electricity
Class 10 Science — every question with an expert-verified, step-by-step solution.
- Q1 A piece of wire of resistance R is cut into five equal parts. These…
- Q1 What does an electric circuit mean?
- Q2 Which of the following terms does not represent electrical power …
- Q2 Define the unit of current.
- Q3 An electric bulb is rated 220 V and 100 W. When it is operated on…
- Q3 Calculate the number of electrons constituting one coulomb of c…
- Q4 Two conducting wires of the same material and of equal lengths and…
- Q5 How is a voltmeter connected in the circuit to measure the pote…
- Q6 A copper wire has diameter 0.5 mm and resistivity of 1.6 × 10⁻⁸ Ω m…
- Q7 The values of current I flowing in a given resistor for the corresp…
- Q8 When a 12 V battery is connected across an unknown resistor, there i…
- Q9 A battery of 9 V is connected in series with resistors of 0.2 Ω,…
All 363 questions on Electricity → Browse all Science chapters →