Advertisements
Advertisements
Question
Consider the following combinations of resistors:




The combinations having equivalent resistance 1 Q is/are ______.
Options
I and IV
Only IV
I and II
I, II and III
Advertisements
Solution
The combinations having equivalent resistance 1 Q is/are I and II.
APPEARS IN
RELATED QUESTIONS
Judge the equivalent resistance when the following are connected in parallel − (a) 1 Ω and 106Ω, (b) 1 Ω and 103Ω and 106Ω.
A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio `"R"/"R'"` is ______.
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 12 Ω, respectively. How much current would flow through the 12 Ω resistor?
If the length of a wire is doubled by taking more of wire, what happens to its resistance?
How does the resistance of a wire change when:
its length is tripled?
Three resistors of 6.0 Ω, 2.0 Ω and 4.0 Ω are joined to an ammeter A and a cell of emf 6.0 V as shown in the following figure. Calculate :
- the effective resistance of the circuit.
- the reading of ammeter.

Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.
Write an expression for calculating electrical power in terms of current and resistance.
You are provided with three resistors of resistance 1.0 Ω, 2.0 Ω and 3.0 Ω How would you connect them to obtain the total effective resistance 1.5 Ω? Draw diagram of the arrangement and check it by calculations.
