Answer:
B. 1.55 × 10³ m/s
Explanation:
f = 3.02 x 10^6 Hz
wavelength = 5.13 x 10^-4 m
v = ?
v = f*lamda
v = 3.02 x 10^6 × 5.13 x 10^-4
v = 1.55 × 10³ m/s
Answer: 4 A
Given
Voltage
Power
Power is given by
Insert the values
The rating of fuse is slightly higher than the normal operating conditions. Therefore, a 4 A fuse should be used here.
Tollway