357167 A 30 \(V\), 90 \(W\) lamp is to be operated on a 120 \(V\) \(D\).\(C\). line. For proper glow, a resistance of ........... ohm should be connected in series with the lamp.

357168 Five identical bulbs rated as \({100 {~W}, 250}\) volt are connected as shown in the figure with a battery of emf \({\varepsilon=260 {~V}}\) and internal resistance \({20\,\, \Omega}\). Find power loss in the bulb \({A}\) in watts.

357169 Assertion :
The fluorescent tube is considered better than an electric bulb.
Reason :
Efficiency of fluorescent tube is more than the efficiency of the electric bulb.

357170 Two electric bulbs rated \(50\,W\) and \(100\,V\) are glowing at full power, when used in parallel with a battery of emf \(120\,V\) and internal resistance \(10\,\Omega \). The maximum number of bulbs that can be connected in the circuit when glowing at full power, is

357167 A 30 \(V\), 90 \(W\) lamp is to be operated on a 120 \(V\) \(D\).\(C\). line. For proper glow, a resistance of ........... ohm should be connected in series with the lamp.

357168 Five identical bulbs rated as \({100 {~W}, 250}\) volt are connected as shown in the figure with a battery of emf \({\varepsilon=260 {~V}}\) and internal resistance \({20\,\, \Omega}\). Find power loss in the bulb \({A}\) in watts.

357169 Assertion :
The fluorescent tube is considered better than an electric bulb.
Reason :
Efficiency of fluorescent tube is more than the efficiency of the electric bulb.

357170 Two electric bulbs rated \(50\,W\) and \(100\,V\) are glowing at full power, when used in parallel with a battery of emf \(120\,V\) and internal resistance \(10\,\Omega \). The maximum number of bulbs that can be connected in the circuit when glowing at full power, is

357167 A 30 \(V\), 90 \(W\) lamp is to be operated on a 120 \(V\) \(D\).\(C\). line. For proper glow, a resistance of ........... ohm should be connected in series with the lamp.

357168 Five identical bulbs rated as \({100 {~W}, 250}\) volt are connected as shown in the figure with a battery of emf \({\varepsilon=260 {~V}}\) and internal resistance \({20\,\, \Omega}\). Find power loss in the bulb \({A}\) in watts.

357169 Assertion :
The fluorescent tube is considered better than an electric bulb.
Reason :
Efficiency of fluorescent tube is more than the efficiency of the electric bulb.

357170 Two electric bulbs rated \(50\,W\) and \(100\,V\) are glowing at full power, when used in parallel with a battery of emf \(120\,V\) and internal resistance \(10\,\Omega \). The maximum number of bulbs that can be connected in the circuit when glowing at full power, is

357167 A 30 \(V\), 90 \(W\) lamp is to be operated on a 120 \(V\) \(D\).\(C\). line. For proper glow, a resistance of ........... ohm should be connected in series with the lamp.

357168 Five identical bulbs rated as \({100 {~W}, 250}\) volt are connected as shown in the figure with a battery of emf \({\varepsilon=260 {~V}}\) and internal resistance \({20\,\, \Omega}\). Find power loss in the bulb \({A}\) in watts.

357169 Assertion :
The fluorescent tube is considered better than an electric bulb.
Reason :
Efficiency of fluorescent tube is more than the efficiency of the electric bulb.

357170 Two electric bulbs rated \(50\,W\) and \(100\,V\) are glowing at full power, when used in parallel with a battery of emf \(120\,V\) and internal resistance \(10\,\Omega \). The maximum number of bulbs that can be connected in the circuit when glowing at full power, is