Physics: resistors in series and parallel

Would more or less of the supply voltage be needed across a 10Ω resistor than a 4.7Ω if connected in series?

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Fill in the blanks: When two resistors are in series they are __________

One after the other

If two 10Ω resistors are connected in series what is the total resistance?

R = R1 + R2 = 10Ω + 10Ω = 20Ω

What is the formula for the total resistance of tow or more resistors in parallel?

R = V/I

Fill in the blanks: supply voltage is ________________ across the two resistors.

Divided

Fill in the blanks: in series the supply voltage ______ across the various components in the circuit

Divides

Fill in the blanks: the total resistance of two identical resistors in parallel is __________ to ___________ of the resistance of either of the individual resistors.

Equal, half

Fill in the blanks: The total resistance of a set number of resistors in series is __________ to the sum of the ________________ of each of the individual resistors

Equal, resistances

How do you work out the current?

I1 = V/R1 I2 = V/R2 I = I1 + I2

Fill in the blanks: in a supply circuit, the current is _____________ at all points

The same

Fill in the blanks: All of the supply voltage is __________ across the first and second resistor in a parallel circuit. The supply voltage ____________________ divide. The current _____________ divide

The same, does not, does

A 1Ω and a 3Ω resistor are connected in series across a 40V supply voltage. What is the p.d. across the 1Ω resistor?

V = (1/4) x 40V = 10V

Fill in the blanks: The voltage across resistor R1 is _________ and the voltage across R2 is __________

V1 and V2