An electron (charge =1.6 × 10-19 coulomb) is moving in a circle of radius 5.1 × 10-11 m at a frequency of 6.8 × 1015 revolution/sec. The equivalent current is approximately

Question

An electron (charge =1.6 × 10-19 coulomb) is moving in a circle of radius 5.1 × 10-11 m at a frequency of 6.8 × 1015 revolution/sec. The equivalent current is approximately (A) 5.1 × 10-3 A (B) 6.8 × 10-3 A (C) 1.1 × 10-2 A (D) 2.2 × 10-2 A

Tardigrade Admin · Accepted Answer

As we know: I=q v ⇒ 1.6 × 10-19 × 6.8 × 1016=11 × 10-3 A I=1.1 × 10-2 A

Q. An electron (charge $= 1.6 \times 1 0^{- 19}$ coulomb) is moving in a circle of radius $5.1 \times 1 0^{- 11} m$ at a frequency of $6.8 \times 1 0^{15}$ revolution/sec. The equivalent current is approximately

$5.1 \times 1 0^{- 3} A$

$6.8 \times 1 0^{- 3}$ A

$1.1 \times 1 0^{- 2} A$

$2.2 \times 1 0^{- 2} A$

As we know:
$I = q v$
$\Rightarrow 1.6 \times 1 0^{- 19} \times 6.8 \times 1 0^{16} = 11 \times 1 0^{- 3} A$
$I = 1.1 \times 1 0^{- 2} A$

Q. An electron (charge =1.6×10−19 coulomb) is moving in a circle of radius 5.1×10−11m at a frequency of 6.8×1015 revolution/sec. The equivalent current is approximately

5.1×10−3A

6.8×10−3 A

1.1×10−2A

2.2×10−2A