The equivalent resistance of several resistors connected in series is
the sum of their individual values.
Four 75-ohm resistors connected in series are electrically equivalent
to a single resistor of 300 ohms.
The battery voltage doesn't matter. In fact, it doesn't matter whether the
resistors are anywhere near a battery or not. They could just as well still
be in the little Radio Shack envelope on the top shelf of the storage room.
If they're connected in series, then they're still electrically equivalent to a
single 300-ohm resistor.
Answer:
The values of the two resistors are 48 ohms and 12 ohms.
Explanation:
Power (P) = Voltage^2 (V^2) ÷ Resistance (R)
R = V^2 ÷ P
The minimum power drawn by the heater is 300 watts
Voltage is 120 V
R = 120^2 ÷ 300 = 14,400÷300 = 48 ohms
The maximum power drawn by the heater is 1200 watts
R = 120^2 ÷ 1200 = 14,400 ÷ 1200 = 12 ohms
It IS <span>PE = (1200 kg)(9.8 m/s²)(42 m) = 493,920 J </span>
<span>The correct answer is: C) refraction.
Hope this helps :)</span>