The positive side of a 10V battery is connected to a 10 Ohm resistor which is connected in series to a 20 Ohm resistor that closes the circuit with the negative terminal of the battery. The positive lead of a voltmeter is palced on the battery side of the 10 Ohm resistor, and the negative voltmeter lead is placed on the common junction of the resistors. What does the voltmeter display (answer in volts)?