A carbon resistor is marked with the rings coloured brown, black, green and gold. The resistance in ohm is

Question

A carbon resistor is marked with the rings coloured brown, black, green and gold. The resistance in ohm is (A) 1 × 106 ± 10 % (B) 1 × 107 ± 5 % (C) 1 × 106 ± 5 % (D) 1 × 105 ± 5 %

Tardigrade Admin · Accepted Answer

First colour gives first digit, second colour gives second digit, third colour gives multiplier and Gold gives tolerance. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/1b561b90b70ae9138a0409abe8236741-.png" /> ∴ Resistance is 10 × 105 ± 5 %=1 × 106 ± 5 %

Q. A carbon resistor is marked with the rings coloured brown, black, green and gold. The resistance in ohm is

$1 \times 1 0^{6} \pm 10%$

$1 \times 1 0^{7} \pm 5%$

$1 \times 1 0^{6} \pm 5%$

$1 \times 1 0^{5} \pm 5%$

First colour gives first digit, second colour gives second digit, third colour gives multiplier and Gold gives tolerance.

$∴$ Resistance is $10 \times 1 0^{5} \pm 5% = 1 \times 1 0^{6} \pm 5%$

Q. A carbon resistor is marked with the rings coloured brown, black, green and gold. The resistance in ohm is

1×106±10%

1×107±5%

1×106±5%

1×105±5%

First colour gives first digit, second colour gives second digit, third colour gives multiplier and Gold gives tolerance. ∴ Resistance is 10×105±5%=1×106±5%

$1 \times 1 0^{6} \pm 10%$

$1 \times 1 0^{7} \pm 5%$

$1 \times 1 0^{6} \pm 5%$

$1 \times 1 0^{5} \pm 5%$

First colour gives first digit, second colour gives second digit, third colour gives multiplier and Gold gives tolerance.

$∴$ Resistance is $10 \times 1 0^{5} \pm 5% = 1 \times 1 0^{6} \pm 5%$