Television is more effective than radio in influencing public opinion because on the television you can see the speaker and observe his movements and gestures, all the little tricks of public speaking.
a. true
b. false

Total Resistance = 72 ohms

In order to find total resistance of the resistors connected in series we will add them all.

Total Resistance = ∑Rn where n is the number of all resistors.

Four resistors in series are of 12, 20, 16, 24 ohms

Total Resistance = R1 + R2 + R3 + R4

Total Resistance = (12 + 16 +20 +24) ohm

Total Resistance = 72 ohms

The current through each resistor in series is equal, but the voltage is not.