When an aeroplane flies horizontantally, a potential difference is developed across the two ends of its wings. Why?

When an aeroplane flies horizontally, a potential difference is developed across the two ends of its wings. Why? On what factors does this potential difference depend?

Two resistances 1 Omega and 2 Omega are connected in series and a potential difference of 6V is applied across the ends of this combination. What will be the terminal potential difference across the second resistance?

Two resistances , each of magnitude 2Omega are connected in series and a potential difference of 2 V is applied at the two ends of the combination . What is the power of the combination?

Two resistances , each of magnitude 2Omega are connected in parallel and a potential difference of 2 V is applied at the two ends of the combination . What is the power of the combination?

An aeroplane is flying horizontally from west to east with a velocity of 900 km/h. Calculate the potential difference developed between the ends of its wings having a span of 20 m. The horizontal component of the Earth's magnetic field is 5xx10^(-4)T and the angle of dip is 30^(@) .

Two resistances 1 Omega and 2 Omega are connected in parallel and a potential difference of 6V is applie across the ends this combination, Calculate the current through the second conductor.

Resistance of a conductor is 200 Omega and the current through it is 10 mA,What is the potential difference across the two ends of the conductor?

The capacitances of two capacitors are 2 mu F and 8 mu F . They are connected in series and a potential difference of 100 V is applied across the combination. What are The potential differences across the two capacitors?