Because the ground dosen't conduct electricity.
Because water conducts electricity
The only type it is weak to is Ground Type,and rock type.
If you mean Electric-types weaknesses, they are only weak against Ground-types.
ONLY ground types. however, some ground type pokemon, ( like cubone or marowak ) have the ability "lightningrod" witch prevents electric type moves for effecting them. electric types don,t effect ground types anyway.
Okay, so here are all of the types of Pokémon and what they are weak and strong against. Normal - WEAK TO: Fighting STRONG TO: None NO EFFECT: Ghost Fire - WEAK TO: Water, Ground & Rock STRONG TO: Grass, Ice, Bug & Steel Water - WEAK TO: Electric & Grass STRONG TO: Fire, Ground & Rock Electric - WEAK TO: Ground STRONG TO: Water & Flying NO EFFECT: Ground Grass - WEAK TO: Fire, Ice, Poison & Bug STRONG TO: Water, Ground & Rock Ice - WEAK TO: Fire, Fighting, Rock & Steel STRONG TO: Grass, Ground, Flying & Dragon Fighting - WEAK TO: Flying & Psychic STRONG TO: Normal, Ice, Rock, Dark & Steel NO EFFECT: Ghost Poison - WEAK TO: Ground & Psychic STRONG TO: Grass NO EFFECT: Steel Ground - WEAK TO: Water, Grass & Ice STRONG TO: Fire, Electric, Poison, Rock & Steel NO EFFECT: Flying Flying - WEAK TO: Electric, Ice & Rock STRONG TO: Grass, Fighting & Bug Psychic - WEAK TO: Bug, Ghost & Dark STRONG TO: Fighting & Poison NO EFFECT: Dark Bug - WEAK TO: Fire, Flying & Rock STRONG TO: Grass, Psychic & Dark Rock - WEAK TO: Water, Grass, Fighting, Ground & Steel STRONG TO: Fire, Ice, Flying & Bug Ghost - WEAK TO: Ghost & Dark STRONG TO: Psychic & Dark NO EFFECT: Normal Dragon - WEAK TO: Ice, Dragon & Fairy STRONG TO: Dragon Dark - WEAK TO: Fighting & Bug STRONG TO: Psychic & Ghost Steel - WEAK TO: Fire, Fighting & Ground STRONG TO: Ice & Rock Fairy (This is a newly added type in the new game, Pokémon X & Y!) - All we know is that Fairy type is strong against Dragon. Hope this Helps! ;)
Heatran is really weak to ground type moves, and weak to water and fighting. Gyrados is really weak to electric, and weak to rock. Jolteon is weak to ground. Flygon is really weak to ice, and weak to dragon. Machamp is weak to psychic and flying. Roserade is weak to fire, ice, flying, and psychic. Those would be the best types to use against them.
Electric Pokemon are weak to only Ground Pokemon.
ground
The only type it is weak to is Ground Type,and rock type.
Ground, fighting and fire
The only thing that is super-effective on electric type Pokemon is ground. However grass and dragon types are both good choices to battle against an electric type as electric moves aren't very effective against them. Electric-type Pokemon are weak against Ground-type moves.
rock or ground
Psychic, Ground, Electric, and Freeze Dry.
If you are fighting electric pokemon: DO use: Ground, fire DON'T use: Flying, electric, steel
If you mean Electric-types weaknesses, they are only weak against Ground-types.
I highlighted the types that the Pokémon are very weak to Aaron: Bug- Type User 1. Yanmega- Is weak to Fire, Electric, Flying, Ice and ROCK 2. Scizor- Is weak to Fire 3. Heracross- Is weak to Flying, Fire & Psychic 4. Vespiquen- Is weak to Fire, Electric, Flying, Ice and ROCK 5. Drapion- Is weak to Ground --------------------------------------------------------------------------------------------------------- Bertha: Ground-Type User 1. Whiscash- Is Weak to Grass 2. Gliscor- Is weak to Water & Ice 3. Golem- Is Weak to Water, Grass and Fight, Ground and Steel 4. Rhyperior- Is Weak to Water, Grass and Fight, Ground and Steel 5. Hippowdon- Is weak to Water, Grass and Ice --------------------------------------------------------------------------------------------------------- Flint: Fire-Type User 1. Houndoom- Is weak to Water, Fight, Rock and Ground 2. Infernape- Is weak to Water, Ground. Flying & Psychic 3. Flareon- Is weak to Water, Ground and Rock 4. Magmortar- Is weak to Water, Ground and Rock 5. Rapidash- Is weak to Water, Ground and Rock --------------------------------------------------------------------------------------------------------- Lucian: Psychic-Type User 1. Mr. Mime- Is weak to Bug, Ghost and Dark 2. Espeon- Is weak to Bug, Ghost and Dark 3. Bronzong- Is weak to Fire 4. Alakazam- Is weak to Bug, Ghost and Dark 5. Gallade- Is weak to Flying & Ghost -------------------------------------------------------------------------------------------------------------- Cynthia: Various- Type User 1. Spiritomb- Is weak to (Nothing) 2. Roserade- Is weak to Fire, Flying Ice and Psychic 3. Togekiss- Is weak to Electric, Ice and Rock 4. Lucario- Is weak to Fire, Fighting and Ground 5. Milotic- Is weak to Electric and Grass 6. Garchomp- Is weak to Dragon and Ice
Ground --------------------- Electric-type attacks (Thunder) are strong against water- and flying-types. Electric-type Pokemon are weak against ground-types.
Electric-type Pokemon are only weak against Ground-type attacks.