Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q128 (NDA-I/2023) Science & Technology › Basic Science (Physics, Chemistry, Biology) Official Key

What is the total resistance in the following circuit element ?

Explanation

The total resistance of 3R/2 (or 1.5R) is derived from a combination of resistors (each of resistance R) arranged in a series-parallel configuration. Based on the official answer, the circuit typically consists of one resistor connected in series with a parallel pair of two resistors.

  • Parallel Calculation: For the two resistors in parallel, the equivalent resistance (Rp) is calculated using the formula 1/Rp = 1/R + 1/R. This simplifies to Rp = R/2.
  • Series Calculation: This parallel group is connected in series with a third resistor. The total resistance (Rtotal) is the sum of the individual resistances: Rtotal = R + R/2 = 3R/2.

This configuration perfectly aligns with Option C, representing a fundamental application of Ohm's Law and Kirchhoff's circuit rules in basic physics.

✓ Thank you! We'll review this.

SIMILAR QUESTIONS

NDA-I · 2022 · Q47 Relevance score: 5.45

Two resistors RY and R2 arranged in parallel combination in an electrical closed circuit are made of the same material and of same thickness. If the length of R2 is twice the length of Rlt then the total resistance R satisfies

NDA-I · 2010 · Q62 Relevance score: 3.72

The effective resistance of three equal resistances, each of resistance r, connected in parallel, is

NDA-II · 2016 · Q63 Relevance score: 3.62

When three resistors, each having resistance ry are connected in parallel, their resultant resistance is .x. If these three resistances are connected in series, the total resistance will be

CDS-I · 2002 · Q57 Relevance score: 3.60

In the electrical circuit (ABC) as shown in the figure given below, the resistances R1, R2 and R3 are same and equal to 30 ohm .If a source of voltage 2V is connected across one arm, the current drawn from the voltage source is

NDA-II · 2021 · Q69 Relevance score: 3.30

Three equal resistors are connected in parallel configuration in a closed electrical circuit. Then the total resistance in the circuit becomes