Consider the following two statements about Kirchhoff’s law
Consider the following two statements: (a) Kirchhoff's junction law follows from the conservation of charge (b) Kirchhoff's loop law follows…
7 years ago
Current Electricity
To draw the maximum current from a combination of cells, how should be the cells
To draw the maximum current from a combination of cells, how should be the cells be grouped? Options (a) Parallel…
7 years ago
When a current of (2.5±0.5) A flows through a wire, it develops a potential difference
When a current of (2.5±0.5) A flows through a wire, it develops a potential difference of (20±1) V, then the…
7 years ago
The kirchoff’s first law (∑i=0) and second law (∑iR=∑E), where the symbols
The kirchoff's first law (∑i=0) and second law (∑iR=∑E), where the symbols have their usual meanings, are respectively based on…
7 years ago
A student measures the terminal potential difference (V) of a cell
A student measures the terminal potential difference (V) of a cell (of emf E and internal resistance r) as a…
7 years ago
Two cells, having the same e.m.f. are connected in series through an external resistance
Two cells, having the same e.m.f. are connected in series through an external resistance R. Cells have internal resistances r₁…
7 years ago
Two resistors of 6Ω and 9Ω are connected in series to a 120 V source.
Two resistors of 6Ω and 9Ω are connected in series to a 120 V source. The power consumed by 6Ω…
7 years ago
Ohm’s law valid
Ohm's law valid Options (a) only for conductors (b) for semiconductors (c) for triode valves (d) for all materials Correct…
7 years ago
Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity
Length of a conductor is 50 cm radius of cross section 0.1 cm and resistivity of the conductor=5x10⁻⁵ Ω cm⁻¹.…
7 years ago
If a wire is stretched to four times its length, then the specific resistance
If a wire is stretched to four times its length, then the specific resistance of the wire will Options (a)…
7 years ago