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3 years ago

Three resistors: R: = 3 , Rz = 62, and R. = 90

Physics

1 answer:

ki77a [65]3 years ago

3 0

Answer: Option C) 4A

Explanation:

Three resistors: R: = 3

Rz = 62

R. = 90

For total resistance for series connection

Rtotal = R + Rz + R.

Rtotal = 3 + 62 + 90 = 155 ohms

Voltage of battery = 36 Volts

Current = ? (Since ammeter measures current and the reading is not provided)

Now apply the formula:

Voltage = Current x Resistance

V = IR

36V = I x 155 ohms

I = 155 ohms/36V

I = 4.3 ampere ( rounded to nearest tenth as 4 ampere)

Thus, the ammeter read 4 ampere after the switch is closed

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