Physics and Programming Quiz

A student connects a voltmeter in series with a resistor to measure current. What will it actually measure?

• Current correctly

• Voltage correctly

• Wrong value (almost no current flows)

• Resistance directly

Which of the following particles does NOT flow in a metallic conductor when current passes?

• Free electrons

• Positive ions

• Holes

• Electrons

Which law can be applied to a closed electrical loop to calculate unknown current?

• Kirchhoff's Current Law

• Kirchhoff's Voltage Law

• Ohm's Law only

• Coulomb's Law

The household electric supply in India is approximately:

• 230 V, 50 Hz AC

• 110 V, 60 Hz AC

• 230 V, 60 Hz DC

• 110 V, 50 Hz DC

Which material is not a semiconductor?

• Silicon

• Germanium

• Copper

• Gallium Arsenide

band gap of silicon is approximately:

• 0.3 eV

• 1.1 eV

• 3 eV

• 5 eV

A device which converts mechanical energy into electrical energy is:

• Motor

• Generator

• Transformer

• Inductor

Which device converts DC to AC?

• Rectifier

• Inverter

• Transformer

• Capacitor

Which of the following does not work on electromagnetic induction?

• Transformer

• Electric motor

• Generator

• Capacitor

A capacitor connected to a DC battery for a long time behaves like:

• Short circuit

• Open circuit

• Resistor

• Source of current