3000 W electric cooker is to be used on a 200V
mains circuit. Which of the fuses below can be
used safely with the cooker?
A. 2A
B. 5A
C. 10A
D. 20A
To determine the fuse that can be safely used with the cooker, we need to calculate the current drawn by the cooker.
The formula to calculate current is:
Current (A) = Power (W) / Voltage (V)
Given:
Power = 3000 W
Voltage = 200 V
Current = 3000 W / 200 V = 15 A
From the given options, the closest fuse rating higher than the calculated current (15 A) is option D, 20 A.
Therefore, option D, 20A, can be safely used with the cooker.
To determine the appropriate fuse for the 3000 W electric cooker, we need to calculate the current required by the cooker.
The formula for calculating current is:
Current (A) = Power (W) / Voltage (V)
Let's plug in the values:
Current (A) = 3000 W / 200V
Current (A) = 15 A
From the calculation, we can see that the current required by the cooker is 15 A.
Therefore, the fuse that can be safely used with the cooker is the 15A fuse, which is not listed among the options provided. Please note that it is crucial to use the appropriate fuse to ensure safety while using electrical appliances.